From deeef732865c7dd901f07b7123e8f7a3c9f189c9 Mon Sep 17 00:00:00 2001 From: 13693261870 <252740454@qq.com> Date: 星期三, 06 十一月 2024 14:53:52 +0800 Subject: [PATCH] 栅格矢量化 --- src/main/java/com/se/simu/helper/ShpHelper.java | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) diff --git a/src/main/java/com/se/simu/helper/ShpHelper.java b/src/main/java/com/se/simu/helper/ShpHelper.java index b46120d..2af67f2 100644 --- a/src/main/java/com/se/simu/helper/ShpHelper.java +++ b/src/main/java/com/se/simu/helper/ShpHelper.java @@ -6,6 +6,8 @@ import com.se.simu.domain.dto.GeField; import com.se.simu.domain.dto.GeLayer; import lombok.extern.slf4j.Slf4j; +import org.gdal.gdal.Dataset; +import org.gdal.gdal.gdal; import org.gdal.ogr.*; import org.gdal.osr.SpatialReference; @@ -299,4 +301,32 @@ private String getEpsg(SpatialReference sr) { return sr.GetAuthorityCode(null); } + + public static boolean polygonize(Dataset ds, String filePath) { + Driver driver = null; + DataSource dataSource = null; + Layer layer = null; + try { + driver = ogr.GetDriverByName("ESRI shapefile"); + if (null == driver) return false; + + dataSource = driver.CreateDataSource(filePath, null); + if (null == dataSource) return false; + + layer = dataSource.CreateLayer(FileUtil.getName(filePath), ds.GetSpatialRef(), ogr.wkbPolygon, getOptions()); + if (null == layer) return false; + + FieldDefn field = new FieldDefn("val", ogr.OFTReal); + layer.CreateField(field); + + gdal.Polygonize(ds.GetRasterBand(1), null, layer, 0, null); + + return true; + } catch (Exception ex) { + log.error(ex.getMessage(), ex); + return false; + } finally { + GdalHelper.delete(layer, dataSource, driver); + } + } } -- Gitblit v1.9.3